Keep your grip pressure light and constant throughout the stroke to avoid snatching or casting the putter, abrupt transitions in the stroke, or tempo fluctuations, as this promotes a smooth stroke, with good accuracy in the stroke path, and consistently solid contact.

The Core PuttFrom: PuttingZone - Teaching Tips (PDFs)
Here's a tip that helps you tune your touch in to the green speed. I call it the "core" putt because it comes from the center of your manner of relating to the world, and that's what you need to get in touch with to activate your touch on the green.

Dead-Eye PuttingFrom: PuttingZone - Teaching Tips (PDFs)
The purpose of a putting routine is to use effective physical behaviors for gaining putting perceptions that promote your best read and stroke and to use effective postures and movement dynamics to execute your best stroke, and an integrated routine has four keys to effective targeting for optimizing a shoulder stroke from a square setup: eye dominance, eye position, gaze control, and neck-head turn.

Gaze Dead Straight for Dead AimFrom: PuttingZone - Teaching Tips (PDFs)
Setting the eyes "above" the ball is not enough for optimal targeting because a gaze direction angled down the face as if reading (with forehead higher than chin at address) makes the hole appear off to the inside, whereas a gaze straight out of the face requires setting the forehead and chin at the same height above the surface, and this gaze is the only one that allows you to scan along the putt path from ball to target on the real line with optimal sensing of spatial relations in the putt.

Hit the Groove through the CurveFrom: PuttingZone - Teaching Tips (PDFs)
To get a more definite sense of the right speed for taking a break without blowing through the break, visualize the final section of the putt curve as a race track banked so that anything faster than the proper speed jumps the track and then deliver the ball with enough speed to keep the ball on the track through the break.

Short Putts are Tough to Sink!From: PuttingZone - Teaching Tips (PDFs)
Short putts require extra care in targeting because the closeness of the hole makes it too large a target for good line control, too visible in the periphery so that you are tempted to move your head for a peek, and not far enough off to your side to generate a substantial angle in the neck-head turn as a cue to the location of the hole in relation to your setup positioning -- so be extra careful!

A Slo-Mo Read for Seeing Enough BreakFrom: PuttingZone - Teaching Tips (PDFs)
Speed determines break, and optimal speed at the hole determines optimal break; the optimal break is obviouly between the fastest speed that will drop and the slowest speed that will just get the ball to the hole, and is a lot closer to the slowest than the fastest to make more of the hole available for capturing the ball and avoiding long comebacks.

Stone Cold PuttingFrom: PuttingZone - Teaching Tips (PDFs)
Truly amazing distance control on a consistent basis for putts of any length is pretty easy if you understand that targeting and tempo establish the backstroke length automatically, and this is much better than "touch and feel," "muscle memory," or any sort of "trying" to get the "hit" or "pace" of the putt just so.

Reading Break: Zero in on the Zero Break LineFrom: PuttingZone - Teaching Tips (PDFs)
If the green surface for the putt is basically flat although tilted, you can find one aim spot for any putt of the same length by identifying the fallline through the hole (the "zero break line" or ZBL) where all putts up or down are perfectly straight, walk around the hole in a semicircle from your ball to a sideon putt to the hole of the same length that is perpendicular to the ZBL (and hence has no elevation change up or down from there to the hole), and visualize this putt at regul regular speed to imagine how far below the hole such a putt would roll low and cross the ZBL; the aim spot for all putts of the same length is that far above the hole along the ZBL.

PuttingZone Putting ManualFrom: PuttingZone - Teaching Tips (PDFs)
This Manual on putting is really a quick and practical overview of the most important points for putting at your best. I've included some drills in each section that you might want to try on the practice green or at home to get a deeper appreciation of the subtleties of this black art, golf's game within a game. And remember, "a golfer who can putt is a match for anyone." ~ Geoff Mangum

The "Mechanics of Instinct" in Putting: The Neurophysiological Paradigm for Applied ResearchFrom: PuttingZone - Teaching Tips (PDFs)
The present study is an examination of the neurophysiology of putting as revealed in recent studies of putting. At this time in the history of putting science, a new paradigm is emerging that focuses upon the human actor in terms of the perceptual and movement processes of brain and body. Early research initiatives lack a thorough grounding in the rapidly advancing field of neuroscience, and such a sound theoretical foundation is essential to efficient and meaningful progress in this promising approach to putting science. The study examines in detail neurophysiologolcal investigations into putting visual processes and putting pressures. The study probes the theoretical limitations of these studies, and proposes future lines of research.

Geoff Mangum's PuttingZone ZipTipsFrom: PuttingZone - Teaching Tips (PDFs)
3 Rules to Sink Breaking Putts -- An intuitive way to approach breaking putts -- so that the chances of sinking the putt are VERY HIGH and the chances of leaving no more than a tiny TAP-IN are virtually certain -- does not require a specific target on the ground. Instead, the golfer simply applies three rules to his breaking putt.